User's Guide

Quantum Scalar Intelligent Libraries SCSI Reference Guide Guide 19
IUS – This field is only returned for Media Changer logical units controlled via parallel SCSI; otherwise, this
field is reserved. An information units supported (IUS) bit of one indicates that the SCSI target device
supports information unit transfers. A value of zero indicates that the SCSI target device does not support
information unit transfers.
Version Descriptors – Indicate SCSI command compliance with certain standards. The data transfer
element hosting the interface will add/insert version descriptors reporting which physical layer and transport
layer revisions are claimed. One or more of the following version descriptors may be reported:
• 005Ch – 2 ANSI INCITS 366-2003.
• 008Dh – SAM-4.
• 0120h – SPC compliance.
• 02FEh – SMC-2 ANSI INCITS 382-2004 compliance.
• 0917h – FCP-2 ANSI INCITS 350-2003 or FCP-3.
• 0A11h – FCP-3 ANSI INCITS 416-2006.
• 0D7Dh – FC-AL-2 ANSI INCITS 332-1999 with Amnd 1 AM1-2003.
• 0DBCh – FC-FS ANSI INCITS 373-2003.
• 131Ch – FC-Tape ANSI INCITS TR-24 1999.
• 133Ch – FC-FLA ANSI INCITS TR-20 1998.
Vital Product Data Pages
The collection of Vital Product Data pages is as follows:
Supported Vital Product Data Page (00h)
Peripheral Qualifier - The return value 000b indicates that the library supports the peripheral device type
at the specified LUN. This field returns 011b if no peripheral device types are supported at that LUN.
Peripheral Device Type – For Media Changer logical units, this field returns 01000b (08h) to indicate it is
a media changer device. For the Controller logical unit, this field returns 01100b (0Ch) to indicate it is a
Controller Device. If an unsupported LUN was specified, this field returns 11111b (1Fh), which indicates that
the device type is unknown.
Page Code - Returned as 00h, indicating this page.
Table 11 Supported Vital Product Data Page (00h)
Bit
Byte
76543210
0 Peripheral Qualifier Peripheral Device Type
1 Page Code (00h)
2 Reserved
3 Page Length
4 First Page Code Supported
5 Second Page Code Supported
6 Third Page Code Supported